Important: This documentation covers Yarn 1 (Classic).

For Yarn 2+ docs and migration guide, see yarnpkg.com.

Package detail

koa

koajs19.4mMIT3.0.1

Koa web app framework

web, app, http, application, framework, middleware, rack

readme

https://yarn.pm/koa

Use it

$ yarn add koa

Try in RunKit · Browse Files

CDNs

jsDelivr: cdn.jsdelivr.net/npm/koa/
bundle.run: bundle.run/koa
unpkg: unpkg.com/koa/

Popularity

GitHub stargazers: 0
Downloads last 30 days: 19.4m
jsDelivr last 30 days: 3.07k
Dependents: 0

Usage

Dependencies vary, fresh, accepts, cookies, destroy, type-is, parseurl, statuses, delegates, encodeurl, mime-types, escape-html, http-assert, http-errors, koa-compose, on-finished, content-type, content-disposition: 18
DevDependencies c8, snazzy, standard, supertest, gen-esm-wrapper: 5
Packages: see package.json

Tags

latest-0: 0.21.2
v1: 1.7.1
next: 2.16.1
experimental: 3.0.0-alpha.5
latest: 3.0.1
latest-2: 2.16.2

Versions

July 30, 2025: 2.16.2
July 27, 2025: 3.0.1
April 28, 2025: 3.0.0

Contributors